Patents by Inventor Jean-Luc Bucaille

Jean-Luc Bucaille has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210109483
    Abstract: A method for producing a timepiece spring includes the following steps: producing a piece based on silicon, having the desired shape of the timepiece spring; thermally oxidising the piece; deoxidising the piece; annealing the piece in a reducing atmosphere; forming a silicon oxide layer on the piece.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 15, 2021
    Inventors: Sylvain JEANNERET, Frédéric MAIER, Jean-Luc BUCAILLE
  • Publication number: 20200379408
    Abstract: Disclosed is a method including: a) obtaining a substrate extending in a predetermined plane with a first layer parallel to the plane; b) forming a through-hole in the first layer; c) depositing a second layer on the first, the second layer filling the a through-hole to form a bridge of material; d) etching a hairspring in an etching layer made up of the second layer or the substrate, the one of the second layer and the substrate in which the a hairspring is not etched constituting a support, the bridge of material connecting the hairspring to the support perpendicular to the predetermined plane; e) removing the first layer, the hairspring remaining attached to the support by the bridge of material; f) subjecting the hairspring to a thermal treatment; and g) detaching the hairspring from the support.
    Type: Application
    Filed: February 21, 2019
    Publication date: December 3, 2020
    Inventors: Michel DESPONT, Frédéric KOHLER, Olivier HUNZIKER, Jean-Luc BUCAILLE
  • Patent number: 10338528
    Abstract: The invention relates to a method for fabrication of a balance spring of a predetermined stiffness comprising the steps of fabricating a balance spring in dimensions of increased thickness, determining the stiffness of the balance spring formed in step a) in order to remove, locally, a volume of material, in order to obtain the balance spring having the dimensions necessary for said predetermined stiffness.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: July 2, 2019
    Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et developpement
    Inventors: Frederic Kohler, Jean-Luc Bucaille, Olivier Hunziker
  • Patent number: 10324418
    Abstract: The invention relates to a method for fabrication of a balance spring of a predetermined stiffness comprising the steps of fabricating a balance spring in dimensions to obtain a deliberately lower stiffness, determining the stiffness of the balance spring formed in step a) in order to compensate for said missing thickness of material required to obtain the balance spring having the dimensions necessary for said predetermined stiffness.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 18, 2019
    Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique SA-Recherche et développement
    Inventors: Frederic Kohler, Jean-Luc Bucaille, Olivier Hunziker
  • Publication number: 20190049900
    Abstract: In an oscillator for a timepiece including a balance and a hairspring, the balance lacks equilibrium, such that: the curves for running of the oscillator owing to weight of the hairspring as a function of the oscillation amplitude of the balance in at least four vertical positions of the oscillator spaced by 90° each pass through 0 at an oscillation amplitude of the balance between 200° and 240°; and between oscillation amplitudes of 150° and 280°, curves representing the running of the oscillator owing to lack of equilibrium in the balance as a function of the oscillation amplitude in the vertical positions each has an average slope of opposite sign to the average slope of the corresponding curve among the curves representing the running of the oscillator owing to the weight of the hairspring. A reduction in the running discrepancies between the vertical positions can thus be achieved.
    Type: Application
    Filed: March 15, 2017
    Publication date: February 14, 2019
    Inventor: Jean-Luc BUCAILLE
  • Publication number: 20170176941
    Abstract: The invention relates to a method for fabrication of a balance spring of a predetermined stiffness comprising the steps of fabricating a balance spring in dimensions of increased thickness, determining the stiffness of the balance spring formed in step a) in order to remove, locally, a volume of material, in order to obtain the balance spring having the dimensions necessary for said predetermined stiffness.
    Type: Application
    Filed: November 18, 2016
    Publication date: June 22, 2017
    Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et developpement
    Inventors: Frederic KOHLER, Jean-Luc BUCAILLE, Olivier HUNZIKER
  • Publication number: 20170176942
    Abstract: The invention relates to a method for fabrication of a balance spring of a predetermined stiffness comprising the steps of fabricating a balance spring in dimensions to obtain a deliberately lower stiffness, determining the stiffness of the balance spring formed in step a) in order to compensate for said missing thickness of material required to obtain the balance spring having the dimensions necessary for said predetermined stiffness.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 22, 2017
    Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA-Recherche et developpement
    Inventors: Frederic KOHLER, Jean-Luc BUCAILLE, Olivier HUNZIKER
  • Patent number: 9323223
    Abstract: The timepiece movement includes a balance-and-hairspring oscillator and an escapement cooperating with the oscillator. The outer turn of the hairspring includes a stiffened portion (9?) arranged to at least partially compensate for the variation in the rate of the movement in dependence upon the oscillation amplitude of the balance caused by the escapement. The hairspring further includes at least one of the following features: a) a distance (R?) between the inner end of the hairspring and the centre of rotation of the hairspring lower than 400 ?m, b) a Grossmann curve (10) defined by the inner turn of the hairspring, c) a stiffened portion defined by the inner turn of the hairspring.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: April 26, 2016
    Assignee: PATEK PHILIPPE SA GENEVE
    Inventor: Jean-Luc Bucaille
  • Patent number: 9134701
    Abstract: A timepiece movement includes a balance-and-hairspring regulator and an escapement co-operating with the regulator, the outer turn (5) of the hairspring including a stiffened portion (6?; 6?; 6??) arranged to make the development of the hairspring more concentric, is characterized in that the stiffened portion (6?; 6?; 6??) is also arranged to at least partially compensate for the variation in the rate of the movement in dependence upon the oscillation amplitude of the balance caused by the escapement.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: September 15, 2015
    Assignee: PATEK PHILIPPE SA GENEVE
    Inventor: Jean-Luc Bucaille
  • Publication number: 20150248113
    Abstract: The timepiece movement includes a balance-and-hairspring oscillator and an escapement cooperating with the oscillator. The outer turn of the hairspring includes a stiffened portion (9?) arranged to at least partially compensate for the variation in the rate of the movement in dependence upon the oscillation amplitude of the balance caused by the escapement. The hairspring further includes at least one of the following features: a) a distance (R?) between the inner end of the hairspring and the centre of rotation of the hairspring lower than 400 ?m, b) a Grossmann curve (10) defined by the inner turn of the hairspring, c) a stiffened portion defined by the inner turn of the hairspring.
    Type: Application
    Filed: October 22, 2013
    Publication date: September 3, 2015
    Inventor: Jean-Luc Bucaille
  • Publication number: 20140192627
    Abstract: A timepiece movement includes a balance-and-hairspring regulator and an escapement co-operating with the regulator, the outer turn (5) of the hairspring including a stiffened portion (6?; 6?; 6??) arranged to make the development of the hairspring more concentric, is characterised in that the stiffened portion (6?; 6?; 6??) is also arranged to at least partially compensate for the variation in the rate of the movement in dependence upon the oscillation amplitude of the balance caused by the escapement.
    Type: Application
    Filed: September 4, 2012
    Publication date: July 10, 2014
    Inventor: Jean-Luc Bucaille